Ref the limb values question: I had a set of new 52# Bear limbs, never used from about 2 years ago. I advertised for $275, had no offers, I just sold them for $250. They were also fast flight capable.
I have been able to buy the old white limbs in low poundage (40 and under) for $100-$150 per set. Black glass limbs in poundages of 50 and over are more in demand and bring more money.
I have no personal experience with the other limb makers values, never seen any for sale. But they do look great. I also have a set of the rare longbow limbs for the takedown. Value of those can be high, they are ugly, but rather rare and hard to find.